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-rw-r--r--Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx35
1 files changed, 29 insertions, 6 deletions
diff --git a/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx b/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx
index 1b0a6063dac..7d0787fefa6 100644
--- a/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx
@@ -23,8 +23,8 @@
%<*driver|package>
% The version of expl3 required is tested as early as possible, as
% some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2017/07/19]
-%<package>\@ifpackagelater{expl3}{2017/07/19}
+\RequirePackage{expl3}[2017/09/18]
+%<package>\@ifpackagelater{expl3}{2017/09/18}
%<package> {}
%<package> {%
%<package> \PackageError{xfp}{Support package l3kernel too old}
@@ -62,14 +62,15 @@
% }^^A
% }
%
-% \date{Released 2017/07/19}
+% \date{Released 2017/09/18}
%
% \maketitle
%
% \begin{documentation}
%
% This package provides a \LaTeXe{} document-level interface to the \LaTeX{}3
-% floating point unit (part of \pkg{expl3}).
+% floating point unit (part of \pkg{expl3}). It also provides a parallel
+% integer expression interface for convenience.
%
% \begin{function}[EXP]{\fpeval}
% The expandable command \cs{fpeval} takes as it's argument a floating
@@ -129,7 +130,22 @@
% An example of use could be the following.
% \begin{verbatim}
% \LaTeX{} can now compute: $ \frac{\sin (3.5)}{2} + 2\cdot 10^{-3}
-% = \fpeval{sin 3.5 /2 + 2e-3} $.
+% = \fpeval{sin(3.5)/2 + 2e-3} $.
+% \end{verbatim}
+%
+% \begin{function}[EXP]{\inteval}
+% The expandable command \cs{inteval} takes as its argument an integer
+% expression and produces a result using the normal rules of
+% mathematics. The operations recognised are |+|, |-|, |*| and |/| plus
+% parentheses. Division occurs with \emph{rounding}, and ties are rounded
+% away from zero. As this command is
+% expandable it can be used where \TeX{} requires a number and for example
+% within a low-level \cs{edef} operation to give a purely numerical result.
+% \end{function}
+%
+% An example of use could be the following.
+% \begin{verbatim}
+% \LaTeX{} can now compute: The sum of the numbers is $\inteval{1 + 2 + 3}$.
% \end{verbatim}
%
% \end{documentation}
@@ -143,7 +159,7 @@
% \end{macrocode}
%
% \begin{macrocode}
-\ProvidesExplPackage{xfp}{2017/07/19}{}
+\ProvidesExplPackage{xfp}{2017/09/18}{}
{L3 Floating point unit}
% \end{macrocode}
%
@@ -154,6 +170,13 @@
% \end{macrocode}
% \end{macro}
%
+% \begin{macro}{\inteval}
+% A second one, this time around an \eTeX{} primitive.
+% \begin{macrocode}
+\NewExpandableDocumentCommand \inteval { m } { \int_eval:n {#1} }
+% \end{macrocode}
+% \end{macro}
+%
% \begin{macrocode}
%</package>
% \end{macrocode}